* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --color-primary: #525252;
  --color-secondary: #262626;
  --color-accent: #a3e635;
  --color-bg: #fafafa;
  --color-surface: #f5f5f5;
  --color-text: #171717;
  --color-text-muted: #737373;
  --color-border: #d4d4d4;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 0;
  --shadow-sm: 4px 4px 0 var(--color-secondary);
  --shadow-md: 6px 6px 0 var(--color-secondary);
  --shadow-lg: 8px 8px 0 var(--color-secondary);
  --border-width: 3px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  border: var(--border-width) solid var(--color-secondary);
  padding: 1rem;
  background: var(--color-accent);
  color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
}

h2 {
  font-size: 2rem;
  border-left: 8px solid var(--color-accent);
  padding-left: 1rem;
  margin-top: 2rem;
}

h3 {
  font-size: 1.5rem;
  background: var(--color-secondary);
  color: var(--color-accent);
  padding: 0.5rem 1rem;
  display: inline-block;
  margin-top: 1.5rem;
}

h4 {
  font-size: 1.25rem;
  border-bottom: var(--border-width) solid var(--color-border);
  padding-bottom: 0.5rem;
}

h5 {
  font-size: 1.125rem;
  color: var(--color-primary);
}

h6 {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-transform: none;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 2px solid var(--color-accent);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  padding: 0 2px;
}

a:hover {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}

a:focus-visible {
  outline: var(--border-width) solid var(--color-secondary);
  outline-offset: 4px;
  background-color: var(--color-accent);
}

strong {
  font-weight: 900;
  color: var(--color-secondary);
  background: var(--color-accent);
  padding: 0 4px;
}

em {
  font-style: italic;
  color: var(--color-primary);
}

blockquote {
  margin: 2rem 0;
  padding: 1.5rem;
  border-left: 8px solid var(--color-accent);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-left-width: 8px;
  box-shadow: var(--shadow-md);
  font-size: 1.125rem;
  font-style: italic;
}

blockquote::before {
  content: '"';
  font-size: 3rem;
  color: var(--color-accent);
  line-height: 0;
  display: block;
  margin-bottom: 1rem;
}

::selection {
  background: var(--color-accent);
  color: var(--color-secondary);
}

.site-header {
  background: var(--color-surface);
  border-bottom: var(--border-width) solid var(--color-secondary);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 0 var(--color-secondary);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.75rem 1.5rem;
  background: var(--color-bg);
  border: var(--border-width) solid var(--color-secondary);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  box-shadow: 3px 3px 0 var(--color-secondary);
}

.site-nav a:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-secondary);
  background: var(--color-accent);
}

.site-nav a:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--color-secondary);
}

.site-main {
  flex: 1;
  padding: 3rem 0;
}

.site-footer {
  background: var(--color-secondary);
  color: var(--color-accent);
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: var(--border-width) solid var(--color-secondary);
}

.site-footer a {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.site-footer a:hover {
  background: var(--color-accent);
  color: var(--color-secondary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.breadcrumbs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  font-size: 0.875rem;
}

.breadcrumbs a {
  border: none;
  padding: 0;
}

.breadcrumbs a::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.breadcrumbs a:last-child::after {
  content: none;
}

.card {
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-secondary);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border: var(--border-width) solid var(--color-accent);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--color-secondary);
}

.card:hover::before {
  opacity: 1;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-md);
  background: var(--color-surface);
}

table thead {
  background: var(--color-secondary);
  color: var(--color-accent);
}

table th {
  padding: 1rem;
  text-align: left;
  font-weight: 900;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border-bottom: var(--border-width) solid var(--color-secondary);
}

table td {
  padding: 1rem;
  border-bottom: 2px solid var(--color-border);
}

table tbody tr {
  transition: background-color 0.2s ease;
}

table tbody tr:nth-child(even) {
  background: var(--color-bg);
}

table tbody tr:hover {
  background: var(--color-accent);
}

table tbody tr:last-child td {
  border-bottom: none;
}

details {
  margin: 1.5rem 0;
  border: var(--border-width) solid var(--color-secondary);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

details[open] {
  box-shadow: var(--shadow-md);
}

summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 900;
  background: var(--color-bg);
  border-bottom: var(--border-width) solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  user-select: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-accent);
  transition: transform 0.2s ease;
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  text-align: center;
  background: var(--color-secondary);
  line-height: 1.5rem;
}

details[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

summary:hover {
  background: var(--color-accent);
}

summary:focus-visible {
  outline: var(--border-width) solid var(--color-secondary);
  outline-offset: -3px;
}

details[open] summary {
  border-bottom-color: var(--color-secondary);
}

details > *:not(summary) {
  padding: 1.5rem;
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

button,
.button {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--color-accent);
  color: var(--color-secondary);
  border: var(--border-width) solid var(--color-secondary);
  font-weight: 900;
  font-size: 1rem;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-main);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.05em;
}

button:hover,
.button:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
  background: var(--color-secondary);
  color: var(--color-accent);
}

button:active,
.button:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--color-secondary);
}

button:focus-visible,
.button:focus-visible {
  outline: var(--border-width) solid var(--color-accent);
  outline-offset: 4px;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.875rem;
  border: var(--border-width) solid var(--color-secondary);
  background: var(--color-surface);
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--color-text);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

ul,
ol {
  margin: 1rem 0 1rem 2rem;
}

li {
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

ul li {
  list-style: none;
  position: relative;
}

ul li::before {
  content: '■';
  position: absolute;
  left: -1.5rem;
  color: var(--color-accent);
  font-size: 0.75rem;
}

ol li {
  padding-left: 0.5rem;
}

code {
  background: var(--color-secondary);
  color: var(--color-accent);
  padding: 0.25rem 0.5rem;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  border: 2px solid var(--color-secondary);
}

pre {
  background: var(--color-secondary);
  color: var(--color-accent);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-md);
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

hr {
  border: none;
  border-top: var(--border-width) solid var(--color-secondary);
  margin: 3rem 0;
  position: relative;
}

hr::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  border-top: var(--border-width) solid var(--color-accent);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
    padding: 1.5rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .site-header .container {
    flex-wrap: nowrap;
  }

  .site-main {
    padding: 4rem 0;
  }

  .card {
    padding: 2.5rem;
  }

  table th,
  table td {
    padding: 1.25rem;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
    padding: 2rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  .site-nav {
    gap: 1rem;
  }

  .site-nav a {
    padding: 1rem 2rem;
  }

  .card {
    padding: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  details > *:not(summary) {
    animation: none;
  }
}

@media print {
  .site-header,
  .site-nav,
  .site-footer,
  .breadcrumbs {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid black;
    page-break-inside: avoid;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  h1 {
    box-shadow: none;
    page-break-after: avoid;
  }
}